I love these colors! It's going to be a gorgeous quilt. I adore Bargellos too, I've only done 2 but I have at least 4 or 5 more knocking around in my head just waiting for me to find time to make them!
I do the same as you when making them...lots and lots of revisions before I find a strip set that seems right. I usually start with 30-40 different fabrics and then end up with about 20 actually make it to the quilt.